<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<form action="/login/" method="post" >
    用户名：<input type="text" name="username">
    密码：<input type="password" name="password">
    <button>提交</button>
</form>
</body>
</html>